AVK METAL SEAT SILENT CHECK VALVE, FLANGED, PN25
SS 1.4308 trim
Contact
AVK International A/S
Bizonvej 1, Skovby, 8464 Galten, Denmark
Flanged silent check valve for water, and water with glycol from -10° C to 110° C
Series 903 metal seated silent check valves are designed to prevent back flow in high temperature range pumping applications. The valve element movement is controlled via a central guide where a centrally mounted spring together with the short movement aids the quick closing that is essential in reducing shock associated with valve closure. The pumped media can be water, glycol or other clean, neutral liquids.
| Variant 903/20-002 | |
|---|---|
| Connection: | Flanged |
| Material: | Ductile Iron |
| DN: | DN65 - DN400 |
| PN: | PN 25 |
Features
- The combination of light disc, short stroke distance and fast closing spring design is effectively mitigating slamming
- Streamlined contour for low head loss
- The special seat design ensures quick and easy trim replacement
- Fusion bonded epoxy coating on both external and internal surfaces
- Metal seat for durability and high temperature tolerance
- Up to and including DN200, the design makes it possible to mount a butterfly valve at the outlet side of the silent check valve, without any additional adapters. This refers to the measure reference C
Downloads
Datasheet
Tender Text
Installation, Operation & Maintenance
Reference nos. and dimensions:
Scroll for more info
| AVK ref. no. | DN mm |
Flange drilling |
L mm |
W mm |
C mm |
Theoretical weight/kg |
|---|---|---|---|---|---|---|
| 903-065-20-71000 | 65 | PN25 | 140 | 185 | 27.5 | 8.0 |
| 903-080-20-71000 | 80 | PN25 | 152 | 200 | 35.5 | 9.0 |
| 903-100-20-71000 | 100 | PN25 | 184 | 235 | 46 | 15 |
| 903-125-20-71000 | 125 | PN25 | 216 | 270 | 51 | 21 |
| 903-150-20-71000 | 150 | PN25 | 248 | 300 | 61 | 31 |
| 903-200-20-71000 | 200 | PN25 | 317 | 360 | 84 | 51 |
| 903-250-20-71000 | 250 | PN25 | 394 | 440 | 118 | 77 |
| 903-300-20-71000 | 300 | PN25 | 362 | 500 | 16 | 97 |
| 903-350-20-71000 | 350 | PN25 | 400 | 580 | 35.5 | 158 |
| 903-400-20-71000 | 400 | PN25 | 448 | 635 | 50 | 208 |
2D/3D drawings
Enquiry
Scroll for more info
Components
| 1. | O-ring | EPDM rubber |
| 2. | Body | Ductile iron GJS-500-7 (GGG-50) |
| 3. | Seat | Stainless steel 1.4308 |
| 4. | Disc | Stainless steel 1.4308 |
| 5. | Spring | Stainless steel 1.4301 |
| 6. | Bush | Stainless steel 316 |
| 7. | Bolt | Stainless steel A2 |
| 8. | Retainer ball | Stainless steel 304 |
| 9. | Bolt | Stainless steel A4 |
Test/Approvals
-
Experimental shell design strength according to EN12516-3
Test according to EN12266
Standards
- Designed according to EN 12334
- Face-to-face dimension according to MSS SP-125 short globe
- Standard flange drilling to EN1092-2 (ISO 7005-2), PN25